On Wed, Jun 10, 2015 at 10:01:01AM +, Vineet Gupta wrote:
> OK - I need some more time to rehash the exact details with our
> hardware folks. But AFAIKR, this was hardware livelock in llock/scond
> when 2 cores were doing r-m-w to two different words in the same cache
> line - adding prefetchw
On Tuesday 09 June 2015 06:05 PM, Peter Zijlstra wrote:
On Tue, Jun 09, 2015 at 05:18:22PM +0530, Vineet Gupta wrote:
This really really wants a Changelog describing the actual hardware fail
and why this workaround is sufficient.
OK - I need some more time to rehash the exact details with our
On Tuesday 09 June 2015 06:05 PM, Peter Zijlstra wrote:
On Tue, Jun 09, 2015 at 05:18:22PM +0530, Vineet Gupta wrote:
This really really wants a Changelog describing the actual hardware fail
and why this workaround is sufficient.
OK - I need some more time to rehash the exact details with our
On Wed, Jun 10, 2015 at 10:01:01AM +, Vineet Gupta wrote:
OK - I need some more time to rehash the exact details with our
hardware folks. But AFAIKR, this was hardware livelock in llock/scond
when 2 cores were doing r-m-w to two different words in the same cache
line - adding prefetchw
On Tue, Jun 09, 2015 at 05:18:22PM +0530, Vineet Gupta wrote:
This really really wants a Changelog describing the actual hardware fail
and why this workaround is sufficient.
--
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Cc: Peter Zijlstra (Intel)
Signed-off-by: Vineet Gupta
---
arch/arc/include/asm/atomic.h | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
index 6fc968f78500..abaf222665e6 100644
---
Cc: Peter Zijlstra (Intel) pet...@infradead.org
Signed-off-by: Vineet Gupta vgu...@synopsys.com
---
arch/arc/include/asm/atomic.h | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/arc/include/asm/atomic.h b/arch/arc/include/asm/atomic.h
index
On Tue, Jun 09, 2015 at 05:18:22PM +0530, Vineet Gupta wrote:
This really really wants a Changelog describing the actual hardware fail
and why this workaround is sufficient.
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to
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